Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 310826
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
126 AM PDT THU JUL 31 2025
...................................
...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR JULY 30 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1927 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 69 2:16 PM 97 1977 73 -4 69
MINIMUM 59 10:25 PM 45 1954 56 3 57
AVERAGE 64 64 0 63
PRECIPITATION (IN)
YESTERDAY 0.00 0.03 1966 0.00 0.00 0.00
MONTH TO DATE T 0.00 0.00 0.00
SINCE OCT 1 16.11 19.53 -3.42 20.13
SINCE JAN 1 7.55 12.56 -5.01 14.80
SNOWFALL (IN)
YESTERDAY MM 0.0
MONTH TO DATE T
SINCE JUN 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 1 2 -1 2
MONTH TO DATE 69 60 9 47
SINCE JUN 1 212 157 55 160
SINCE JUL 1 69 60 9 47
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 0 30 -30 43
SINCE JUN 1 1 53 -52 49
SINCE JAN 1 7 73 -66 60
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 13 RESULTANT WIND DIRECTION W (260)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 13.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 1:00 AM
LOWEST 66 2:00 PM
AVERAGE 78
..........................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 97 1993
MINIMUM TEMPERATURE (F) 56 49 1953
1954
1956
SUNRISE AND SUNSET
JULY 31 2025..........SUNRISE 6:13 AM PDT SUNSET 8:18 PM PDT
AUGUST 1 2025........SUNRISE 6:14 AM PDT SUNSET 8:17 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$